Home / 811,648.32-1,120,107.69-449,066.31

Finding the Fourth Proportional to 811,648.32, 1,120,107.69 and 449,066.31

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Solution

The fourth proportional to 811,648.32, 1,120,107.69 and 449,066.31 is: 619,729.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,648.32 : 1,120,107.69 = 449,066.31 : x
  2. Step 2: Convert to fraction form
    811,648.32/1,120,107.69 = 449,066.31/x
  3. Step 3: Cross multiply
    811,648.32x = 1,120,107.69 × 449,066.31
  4. Step 4: Simplify right side
    811,648.32x = 503,002,627,150.92
  5. Step 5: Solve for x
    x = 503,002,627,150.92/811,648.32
  6. Step 6: Final answer
    x = 619,729.77

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.